CN-121983858-A - Multi-chamber arc extinguishing device

Abstract

The application relates to the technical field of power transmission and distribution equipment, in particular to a multi-chamber arc extinguishing device, which comprises a base body, an arc extinguishing framework and a first reinforcing column, wherein the base body is provided with an axis arranged along the upper and lower directions, the arc extinguishing framework is embedded in the base body and comprises a plurality of layers of arc extinguishing units which are sequentially arranged at intervals from top to bottom, each arc extinguishing unit comprises a solid section and an opening ring structure of each opening section, the solid section and the opening sections are arranged to form an opening ring structure around the axis, the opening sections of at least two layers of adjacent arc extinguishing units are arranged up and down oppositely, the opening sections aligned up and down form a channel through which pouring materials can continuously pass, a columnar pouring body can be formed in the channel in the process of pouring the base body, the reinforcing column forms a reinforcing core in the columnar pouring body, and the connection strength of the base body between the two adjacent layers of arc extinguishing units is enhanced.

Inventors

• TANG YAOJING
• CHEN SHANGSHANG
• LI NA
• YE FENG
• YANG DAOPEI
• ZHANG WEI
• CAO WANGSHU
• ZHANG QIAN
• MA JU
• ZHU CHENYAN
• CHEN RONGZHU
• XU JIYAO
• CAO HUI
• WANG JIAXING
• YI YONGLI
• ZHOU YUZHI
• YE ZHENGCE
• SHI YIZHI

Assignees

• 国网浙江省电力有限公司温州供电公司

Dates

Publication Date

20260505

Application Date

20260407

Claims (10)

1. 1. A multi-chamber arc extinguishing device, comprising: a base body (1) having an axis (Z) arranged in the up-down direction; The arc extinguishing framework (2) is embedded in the base body (1), the arc extinguishing framework (2) comprises a plurality of layers of arc extinguishing units (21) which are sequentially arranged at intervals from top to bottom, the arc extinguishing units (21) comprise solid sections (211) and opening sections (212), the solid sections (211) and the opening sections (212) are arranged in an opening ring structure around the axis (Z), and the opening sections (212) of at least two adjacent layers of arc extinguishing units (21) are arranged in an up-down opposite mode; The first reinforcing column (3) is embedded in the base body (1), and the first reinforcing column (3) penetrates through the opening sections (212) which are opposite up and down.
2. 2. A multi-chamber arc extinguishing device according to claim 1, characterized in that the open sections (212) of each layer of arc extinguishing units (21) are arranged opposite one another up and down, the first reinforcing columns (3) penetrating all the open sections (212).
3. 3. The multi-chamber arc extinguishing device according to claim 1, characterized in that the solid section (211) comprises a plurality of first arc extinguishing shells (2111) and a plurality of first electrical conductors, the first arc extinguishing shells (2111) being alternately spaced apart from the first electrical conductors around the axis (Z); The first electric conductors comprise a first electric conductor (2112) and a second electric conductor (2113), one of the first electric conductor (2112) and the second electric conductor (2113) is arranged between two adjacent first arc extinguishing shells (2111) in the same layer of the arc extinguishing unit (21), and at least one layer of the arc extinguishing unit (21) is provided with the second electric conductor (2113); the second type conductor (2113) comprises a first spherical electrode (21131), a second spherical electrode (21132) and a conductive rod (21133), a space (21134) is arranged between the first spherical electrode (21131) and the second spherical electrode (21132) in the circumferential direction of the arc extinguishing unit (21), and the conductive rod (21133) is connected with the first spherical electrode (21131) and the second spherical electrode (21132).
4. 4. A multi-chamber arc suppressing device according to claim 3, wherein each layer of said arc suppressing units (21) is provided with at least one of said second type conductors (2113).
5. 5. The multi-chamber arc extinguishing device according to claim 4, characterized in that the spaces (21134) of at least two adjacent layers of the arc extinguishing units (21) are arranged opposite one another.
6. 6. The multi-chamber arc extinguishing device according to claim 5, further comprising a second reinforcing post (4), the second reinforcing post (4) being embedded in the base body (1), the second reinforcing post (4) extending through at least two of the spaces (21134) that are opposite one another.
7. 7. The multi-chamber arc extinguishing device according to claim 6, wherein each layer of the arc extinguishing units (21) is provided with three second-type conductors (2113), the intervals (21134) of the three second-type conductors (2113) are respectively a first interval, a second interval and a third interval, the first intervals of the arc extinguishing units (21) of each layer are arranged in a vertically opposite manner, the second intervals of the arc extinguishing units (21) of each layer are arranged in a vertically opposite manner, and the third intervals of the arc extinguishing units (21) of each layer are arranged in a vertically opposite manner; The number of the second reinforcing columns (4) is three, and the three second reinforcing columns (4) respectively penetrate through all the first intervals, all the second intervals and all the third intervals up and down.
8. 8. A multi-chamber arc extinguishing device according to claim 7, characterized in that three of the second reinforcing columns (4) and the first reinforcing columns (3) are uniformly spaced around the axis (Z).
9. 9. The multi-chamber arc extinguishing device according to claim 1, characterized in that the material of the first reinforcement column (3) comprises at least one of polyetheretherketone, polyimide and fiber reinforced composite.
10. 10. A multi-chamber arc extinguishing device according to claim 1, characterized in that the current flow direction of the adjacent two layers of arc extinguishing units (21) is opposite.

Description

Multi-chamber arc extinguishing device Technical Field The application relates to the technical field of power transmission and distribution equipment, in particular to a multi-chamber arc extinguishing device. Background The multi-chamber arc extinguishing device is a key device for limiting lightning overvoltage and protecting insulation of electrical equipment. The multi-chamber arc extinguishing device accelerates arc extinguishing by dividing an arc into a plurality of independent chambers using gas jets. In order to improve the arc extinguishing efficiency, the compactness of the multi-chamber arc extinguishing device has become an important development direction. Currently, the mainstream structure of multi-chamber arc extinguishing devices includes vertical series connection and spiral series connection. The vertical tandem structure is as in the Chinese patent application publication No. CN118155965A, in the structure, the first electric conductors and the insulating shells are alternately arranged in the columnar substrate from top to bottom in sequence, and arc extinguishing cavities are arranged in the insulating shells. In contrast, in a spiral serial structure, for example, in the Chinese patent application publication No. CN113054533B, a plurality of layers of serially connected disk-type structural units are arranged in the columnar matrix to serve as arc extinguishing units, so that the density of the cavity is remarkably improved, and the compactness of the structure is realized. However, in the spiral tandem structure, for realizing spiral transmission of electric arcs, each layer of arc extinguishing units has a solid section and an opening section, and the opening sections of the upper layer of arc extinguishing units and the lower layer of arc extinguishing units are completely staggered. This results in that when the columnar matrix is formed by casting with epoxy resin, the cured resin is separated by each layer of solid segments, and the columnar matrix cannot form an integral reinforcing structure which penetrates continuously up and down. The structural defect causes the overall rigidity of the columnar matrix to be insufficient, and the columnar matrix is easy to deform when bearing the impact of air flow in the arc extinguishing chamber, thereby directly affecting the stability of the arc extinguishing performance and the service life of the device. Disclosure of Invention Based on the above, the application aims to provide a multi-chamber arc extinguishing device which has better compactness and larger rigidity. The multi-chamber arc extinguishing device of the present application comprises: A base body having an axis arranged in the up-down direction; The arc extinguishing device comprises a substrate, an arc extinguishing framework, at least two layers of adjacent arc extinguishing units, a plurality of arc extinguishing units and a plurality of connecting rods, wherein the arc extinguishing framework is embedded in the substrate and comprises a plurality of layers of arc extinguishing units which are sequentially arranged at intervals from top to bottom; the first reinforcing columns are embedded in the matrix and penetrate through the opening sections which are opposite up and down. Alternatively, the opening sections of the arc extinguishing units of each layer are arranged in a vertically opposite mode, and the first reinforcing columns penetrate through all the opening sections. Alternatively, the solid segment includes a plurality of first arc extinguishing shells and a plurality of first electrical conductors, the first arc extinguishing shells and the first electrical conductors being alternately spaced around the axis; The first electric conductors comprise first electric conductors and second electric conductors, one of the first electric conductors and the second electric conductors is arranged between two adjacent first arc extinguishing shells in the same layer of the arc extinguishing units, and at least one layer of the arc extinguishing units is provided with the second electric conductors; The second type of conductors comprise a first spherical electrode, a second spherical electrode and a conductive rod, a space is arranged between the first spherical electrode and the second spherical electrode in the circumferential direction of the arc extinguishing unit, and the conductive rod is connected with the first spherical electrode and the second spherical electrode. As an alternative, each layer of the arc extinguishing units is provided with at least one of the second type of conductors. Alternatively, the spaces of at least two adjacent layers of the arc extinguishing units are arranged in a vertically opposite manner. Alternatively, the multi-chamber arc extinguishing device further comprises a second reinforcing column embedded in the base body, and the second reinforcing column penetrates through at least two spaces which are opposite to each other up and